package com.itheima.service;

import com.itheima.pojo.Member;

import java.util.List;
import java.util.Map;

/**
 * @create 2020/11/27 0027 10:12
 */
public interface MemberService {
    //根据手机号查询会员
    Member findByTelephone(String telephone);
    
    void add(Member member);
    
    List<Integer> findMemberCountByMonths(List<String> months);
    
    List<Map<String, Object>> getMemberCount();
    
    List<Map<String, Object>> getAgeCount();
    
    
}
